Resonant amplification of a slow Langmuir wave in a relativistic electron beam

Journal Article · Wed Jun 01 04:00:00 EDT 1983 · Sov. Phys. - Tech. Phys. (Engl. Transl.); (United States)

OSTI ID:5375983

Bonch-Osmolovskii, A G; Dolya, S N; Reshetnikova, K A

Interaction is considered between a relativistic electron beam and a wave excited by an external source in a slow wave structure when the initial amplitude of the wave is nonzero. Efficient acceleration of the Langmuir mode occurs at resonance, when the parameters of the external wave satisfy the dispersion relation for the slow Langmuir mode. That is, the amplitude of the axial electric wave field in the beam-retarding structure system increases linearly with time and along the axis of the system; the spatial amplification factor, e.g., is GAMMA/sub L/ = ..pi../lambda, where lambda is the wavelength at resonance. Two methods are developed for describing the resonant interaction, including the nonlinear behavior. The parameters describing the interaction are estimated and it is found that the resonant interaction provides a highly efficient mechanism for producing deep spatial modulation of the density in a relativistic electron beam or in electromagnetic waves of amplitude >100 kV/cm with a low phase velocity.

• OSTI ID: 5375983
• Journal Information: Sov. Phys. - Tech. Phys. (Engl. Transl.); (United States), Journal Name: Sov. Phys. - Tech. Phys. (Engl. Transl.); (United States) Vol. 28:6; ISSN SPTPA
• Country of Publication: United States
• Language: English

Related Subjects

640301* -- Atomic
Molecular & Chemical Physics-- Beams & their Reactions
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AMPLIFICATION
BEAMS
DISPERSION RELATIONS
ELECTRON BEAMS
ENERGY RANGE
LEPTON BEAMS
MODULATION
PARTICLE BEAMS
PLASMA WAVES
RELATIVISTIC RANGE
RESONANCE